The 19th IUPAC International Symposium on Organometallic Chemistry Directed towards OrganicSynthesis (OMCOS-19) conference was held on the beautiful island Jeju which is located in thesouthernmost part of Korea. This was the first OMCOS conference to be held in Korea. Thesymposium venue was International Convention Center JEJU (ICC JEJU), and the period wasfrom June 25th to June 29th of 2017. The organizing committee of OMCOS19 is indebted to oursponsors including the Institute for Basic Science (IBS) – Center for Catalytic Hydrocarbon
Functionalizations, Seoul National University, the Korean Chemical Society and the Korean
Society of Organic Synthesis for their generous support.

<The 19th OMCOS began with opening remarks by Professor Sukbok Chang>The conference again was marked by great talks by preeminent scientists from around the world,with strong participation from industry and academia, graduate students, postdoctoral fellows andfaculty. A total of 772 participants from 20 different countries came to the 19th OMCOS to attend
presentations from 7 Plenary Lecturers and 15 Invited Lecturers. In addition, 19 Short Talks werealso given that were selected from 550 Poster Presentations.

KoreaBy Nationality (772 participants)

Japan
GermanyUnitedStates
China
UnitedKingdom
Switzerland
Czech
Republic
TaiwanSpainCanadaSingapore

The conference was opened by the plenary lecture by Professor Robert Grubbs in the evening ofJuly 25.

Following the first lecture was a welcoming reception held at the Ocean View Hall of ICC Jeju.

<Attendees are enjoying the food and musical performance prepared at the reception>

The scientific program continued in Monday morning with the second plenary lecture delivered byProfessor Guy Lloyd-Jones. Further plenary lectures were presented over the course of the week
including Professors Douglas Stephan, Chul-Ho Jun, Masahiro Miura, David MacMillan, andShengming Ma. The symposium featured 14 Invited lectures on broad themes of organometallic
chemstry given by Vy M. Dong, Christophe Copéret, Kenichiro Itami, Martin Oestreich, Syuzanna
Harutyunyan, Shu-Li You, Henri Doucet, Frank Glorius, Tobias Ritter, Jerome Waser, Teck-PengLoh, Danielle Schultz, Masaya Sawamura, and Guangbin Dong. The scientific program also
included the OMCOS19 Award Lecture by Professor Ruben Martin. Following the tradition ofOMCOS, a total of 19 lectures were also selected from the contributed Posters.

<OMCOS lectures were delivered><After each of the presentation, participants had active Q&A session>
This symposium organized two poster sessions on Monday and Wednesday. A total of 550
posters of high scientific quality contributed to these exciting events.

<Attendees are sharing the latest research outcomes and networking during poster sessions>

<Lunch time>
Professor Ruben Martin won the OMCOS Award, which was supported by generous donation ofYen Chuang Foundation and Springer. Following a ceremony, the Award Lecture was delivered inthe morning of Tuesday.

<OMCOS19 Award Winner, Professor Ruben Martin>

As has been another tradition of OMCOS conferences, Tuesday afternoon was reserved for a halfday excursion. Acitivities included short trekking, hiking Mt. Halla, and visits to the cobalt-blue
northern seashore as well as a museum of indigenous life in Jeju Island.

<Excursion>
The traditional conference banquet was held on Wednesday night, where we thanked all thecontributors to the event, from speakers to all the administrative staffs and student volunteers whomade the wonderful event possible.

<The colorful dance scene of the performance team><Banquet>
After the final lecture was delievered on the last day, the closing ceremony followed, in which eight
posters received Poster Awards during the closing ceremony. The organizing committee thanks
Wiley, Thieme and the RSC for supporting the prizes.

<Poster Award>
OMCOS19 ended with closing remarks delivered by Professor Chulbom Lee. We are forevergrateful to the large number of participants who made OMCOS19 a successful event. From Jeju,
the meeting moves to Heidelberg in Germany with Professor Stephen Hashmi as Chair. We wish
all the best to Professor Hashmi and see you all again at Heidelberg in 2019!

< The 19th OMCOS ended with closing remarks by Professor Chulbom Lee>